86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/mtproto/AuthKey.h"
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#include "td/mtproto/Handshake.h"
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#include "td/mtproto/NoCryptoStorer.h"
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#include "td/mtproto/PacketInfo.h"
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#include "td/mtproto/PacketStorer.h"
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#include "td/mtproto/RawConnection.h"
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#include "td/utils/buffer.h"
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#include "td/utils/common.h"
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#include "td/utils/format.h"
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#include "td/utils/logging.h"
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#include "td/utils/port/detail/PollableFd.h"
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#include "td/utils/Status.h"
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#include "td/utils/StorerBase.h"
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namespace td {
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namespace mtproto {
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class HandshakeConnection final
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: private RawConnection::Callback
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, private AuthKeyHandshake::Callback {
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public:
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HandshakeConnection(unique_ptr<RawConnection> raw_connection, AuthKeyHandshake *handshake,
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unique_ptr<AuthKeyHandshakeContext> context)
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: raw_connection_(std::move(raw_connection)), handshake_(handshake), context_(std::move(context)) {
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handshake_->resume(this);
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}
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PollableFdInfo &get_poll_info() {
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return raw_connection_->get_poll_info();
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}
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unique_ptr<RawConnection> move_as_raw_connection() {
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return std::move(raw_connection_);
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}
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void close() {
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raw_connection_->close();
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}
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Status flush() {
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auto status = raw_connection_->flush(AuthKey(), *this);
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if (status.code() == -404) {
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LOG(WARNING) << "Clear handshake " << tag("error", status);
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handshake_->clear();
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}
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return status;
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}
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private:
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unique_ptr<RawConnection> raw_connection_;
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AuthKeyHandshake *handshake_;
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unique_ptr<AuthKeyHandshakeContext> context_;
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void send_no_crypto(const Storer &storer) final {
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raw_connection_->send_no_crypto(PacketStorer<NoCryptoImpl>(0, storer));
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}
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Status on_raw_packet(const PacketInfo &packet_info, BufferSlice packet) final {
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if (!packet_info.no_crypto_flag) {
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return Status::Error("Expected not encrypted packet");
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}
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// skip header
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if (packet.size() < 12) {
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return Status::Error("Result is too small");
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}
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packet.confirm_read(12);
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auto fixed_packet_size = packet.size() & ~3; // remove some padded data
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TRY_STATUS(handshake_->on_message(packet.as_slice().truncate(fixed_packet_size), this, context_.get()));
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return Status::OK();
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}
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};
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} // namespace mtproto
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} // namespace td
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